Effective field theory of anisotropic inflation and beyond

Jinn Ouk Gong, Toshifumi Noumi, Gary Shiu, Jiro Soda, Kazufumi Takahashi, Masahide Yamaguchi

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


We develop an effective-field-theory (EFT) framework for inflation with various symmetry breaking pattern. As a prototype, we formulate anisotropic inflation from the perspective of EFT and construct an effective action of the Nambu-Goldstone bosons for the broken time translation and rotation symmetries. We also calculate the statistical anisotropy in the scalar two-point correlation function for concise examples of the effective action.

Original languageEnglish
Article number027
JournalJournal of Cosmology and Astroparticle Physics
Issue number8
StatePublished - Aug 2020


  • Inflation
  • Power spectrum


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